Detective Hallgrim Hallgrimson is put in charge when a police officer is found murdered.

Marie and Hallgrim are now on the trail of suspects in two murder cases.

A woman's body is discovered behind the hotel where Hallgrim is staying.

The Russian hitman leaves Hallgrim's team desperate to find him.

Recent police impounds have left the team struggling with an issue of national security.

CCTV footage reveals a dangerous plot.

Marie and Hallgrim now represent the new Danish police department for organized cross-border crime.

The police are working full throttle to solve the case, while Hallgrim is watched over by Marie.